Sack holder



Feb. 12, 1952 HUNT 2,585,320

SACK HOLDER Filed Jan. 24, 1947 //v VEN TO R. 23 For E HUNT 6V 1 /15 ATTORNEYJ.

HA RIP/5, K/Ech; F05 7-5;? & HARE/5 6r Patented Feb. 12, 1952 UNITED STATES PATENT OFFICE,

SACK HOLDER Foy F. Hunt, Alhambra, Calif. 4 Application January 24, 1947, Serial No. 723,916

3 Claims. (Cl. 248-101) My invention relates to the art of packaging, and more particularly to the filling of cloth or paper sacks with comminuted material. The principal use which I have found for it up to this time is in filling sacks with various comminuted food materials, such as grain, chicken feed, or the like, although it may be used to fill sacks with other materials.

The obiect of the invention is to enable the user to conveniently and quickly fill a sack with out danger of tearing the sack.

Further obiects and advantages will be made evident hereinafter. The drawing illustrates filling mechanism embodying my invention. In the drawing:

Fig. 1 is a plan view of the mechanism with the spout shown in dotted lines;

Fig. 2 is a section on a vertical plane indicated by the line a--a of Fig. 1; and

Fig. 3 is an isometric view showing a portion of my invention, a portion thereof being shown in section.

In the drawing, which illustrates the mode by which I have up to this time contemplated applying my invention, II is an inclined spout through which the material to be sacked, for example, grain, is fed by gravity. A closure member (not shown), such as is commonly used on such spouts, is provided, this closure member being operated by a grain control lever l2, which may be grasped by the right hand l3 of the user and which, when pulled upwardly as shown in Fig. 2, allows the grain M to flow into a sack |5 held in position as shown in Fig. 2. When the user pushes the lever 2 to its lowermost position, the closure member stops further flow of grain M from the spout.

Positioned under the open end of the spout is a. frame 2| consisting of legs 22 and horizontal members 23. These members 22 and 23 may be conveniently made of angle iron welded together. Welded to the legs 22 of the frame 2| is a curved, stationary, or primary, bar 24 curved as shown in the drawing. The frame 2| may be tied to the spout II by braces 25 and 26. A pair of sliding members 3| and 32 are free to slide within limits toward and away from the user, these members being guided by the horizontal members 23. Welded to the forward end of each of the sliding members 3| and 32 is a movable or secondary bar 33, which is also curved into about the same shape as the primary bar 24. Extending between the members 3| and 32 and Welded thereto is a cross bar 34 which has welded to it two ears 35 bored to receive a pin 36. Engaging the pin and pivoted thereon is the forward end of a first rod 4|, the other end of which is threaded in a turnbuckle 42, the rod 4| being locked by a lock 43. Threadedin the other or rear end of the turnbuckle 42 is a second rod 44 which may be locked againstrotation in the turnbuckle 42 by a lock nut45. "The rod 4| may be secured in the turnbuckle 42 by a right-hand thread, and the rod 44 may be so secured by a left-hand thread. The free end of the rod 44 is provided with a nut 46 and washer 41. The purpose of the turnbuckleis to adjust the distance between the pin 36 and the nut 46.

The second rod 44 projects into a casing 5| through a washer 52 threaded in the end of the casing, and a compression spring 53 surrounds the second rod, the spring pressing at one end on the washer 52 and at the other end on the washer 41, tending to force the washers 41 and 52 away from each other. Journaledat 54 on the members 23 is a cross shaft 55 which has rigidly secured to it a pair of toggle cranks 56 carrying a pin 51 which is engaged by an extension 58 of the casing. 5|. When the sack is being held as hereinafter explained, the pin 51 above a plane passing through the shaft 55 and the pin 36, forming a toggle which is held in this position, as shown in Fig. 2, by the compression of the spring 53.

Rigidly secured to one end of the cross shaft 55 is an operating crank 6| which carries a pin 52 to which one end 63 of an operating rod 64 is pivoted, the other end 65 of this rod being pivoted to a pin 66. The pin 66 is carried by a bag clamping lever 61 which is pivoted on a pin or bolt 68 carried by the brace 25. The clamping lever 61 and the grain control lever l2 are both so placed as to be readily operated by the right hand l3 of the operator.

The method of using the invention is as follows. The flow of grain being shut off by the closure member in the spout the grain control lever I2 is in its closed position, as shown in dotted lines in Fig. 2. The sack clamping lever 61 is in its released position, and the extension 58 is in the position shown in dotted lines in Fig. 2. The secondary bar 33 is pushed away from the primary 'bar 24 to the position shown in Fig. 3. The operator, using both hands, pulls the sack |5 up between the bars 33 and 24 so that the bar 33 is inside the sack I5. The operator, using his left hand 1|, pulls the sack |5 against the bar 33,

55 the top of the sack tending to overlap the top of the bar 33, as shown in Fig. 3. The operator can then hold the sack IS in place, using only his left hand 1|, leaving his right hand I3 free to operate the sack clamping lever 61. He pulls this lever forward into the position shown in full lines in Fig. 2, thus pulling the other members into full line position as shown in Fig. 2. This pulls the members 3| and 32 away from him and pulls the bar 33 carrying the sack l away from him and clamps the sack l5 solidly between the bars 24 and 33, compressing the spring 53 to insure proper pressure on bags of different thicknesses and insuring that the mechanism, due to the toggle action previously explained, will stay set in closed position after his right hand I3 releases its hold on the sack clamping lever 61. He therefore shifts his right hand to the grain control lever l2 and raises it, thus allowing the grain H to flow into the end of the sack held openvby his left hand. He allows the grain I4 to flow until the sack I5 is filled with grain. He then pushes the grain control lever l2 down and shuts off the further flow of grain. By then pushing the sack clamping lever 61 away from him, he separates the bars 24 and 33, and the sack is free to drop into a position in which it can be closed and tied.

-I claim as my invention:

1. A bag filling mechanism, comprising: a frame; a primary bar fixed to said frame; a secondary bar so guided that it may be moved toward and away from said primary bar; a sack clamping lever; a cross shaft; an operating crank rigidly fixed on said cross shaft; a rod connecting said sack clamping lever to said operating crank; a toggle crank fixed on said cross shaft; a casing having an extension pivoted to the end of said toggle crank; means pivotally connected to said secondary bar and elastically connected to said casing; a pull rod extending into said casing;spring means between said pull rod and said casing; and members through which said pull rod moves said bars toward or away from each other.

2. In a bag filling machine, the combination of: a frame; a primary bar fixed to said frame; a secondary bar having curved ends so shaped as to fit inside the bag to be filled; members rigidly fixed to said secondary bar and so mounted in said frame that they can slide in said frame in a direction at right angles to the major axis of said bar; a shaft carried by said frame and so mounted thereon that it can turn with relation to said frame; an operating lever by means of which said shaft can be so turned; a bell crank lever rigidly fixed to said shaft; and members so connecting the end of said bell crank lever to said secondary bar that said bar so slides as said shaft is so turned.

3. In a bag filling machine, the combination of: a frame; a primary bar fixed to said frame; a

secondary bar having curved ends so shaped as to fit inside the bag to be filled; members rigidly fixed to said secondary bar and so mounted in said frame that they can slide in said frame in a direction at right angles to the major axis of said bar; a shaft carried by said frame and so mounted thereon that it can turn with relation to said frame; an operating lever by means of which said shaft can be turned; a bell crank lever rigidly fixed to said shaft; a compression spring; a member pivoted on said bell crank and so placed as to compress said spring when said shaft is so turned; and a member engaged by the other end of said spring and so connected to said secondary ,bar that said bar is moved toward said primary bar as said spring is so compressed.

FOY F. HUNT.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

